The world of sports is thought to be ruled by people in the prime of their lives. Most professional athletes are in their 20s and 30s, because the body starts to deteriorate and slow as they get older. But these oldest professional athletes ever defy that logic, and showed those youngsters what it's all about.

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Image By: Get Big

Albert Beckles

At 53 years old, Beckles was still a pro bodybuilder.

Image By: Made Man

Saoul Mamby

Mamby was a pro boxer at the ripe age of 60.

Image By: Sporting News

Nancy Lieberman

At 50 years old, Lieberman was the oldest professional female basketball player.